For most students, taking a course online instead of in person makes only a small difference to grades on average. That average blends two very different stories, though, because the format tends to magnify whatever habits and advantages a student already brings. Courses that mix online work with time in a classroom also often come out ahead of fully online and fully in-person courses alike.
How Much Online Courses Change Your Grades
In a large university study covering many courses, online and in-person grades differed by less than 0.07 GPA points on a 4-point scale.1CORE Scholar. A Large Sample Comparison of Grade Based Student Learning Outcomes in Online vs. Face-to-Face Courses A student’s existing GPA predicted their course grade far more than the format did.2CORE Scholar. A Large Sample Comparison of Grade Based Student Learning Outcomes in Online vs. Face-to-Face Courses
Other evidence finds a real cost. Another large college study found that taking a course online instead of in person lowered grades in that course and in later courses.3American Economic Review. Virtual Classrooms: How Online College Courses Affect Student Success Students who took courses online were also less likely to stay enrolled at the university.4American Economic Review. Virtual Classrooms: How Online College Courses Affect Student Success Results can swing course by course, too, with online students scoring higher in some classes and lower in others at the same university.5Humanities and Social Sciences Communications. Online vs in-person learning in higher education: effects on student achievement and recommendations for leadership The two kinds of findings can both be accurate because they measure different things. One looks at grades in a single course; the other follows students into later courses and tracks whether they stay enrolled. Dropping out or doing worse later shows up only when researchers follow students over time, so a study that compares grades within one course can miss it.
Studies disagree partly because they compare different students, colleges, and courses, so their averages differ. A course designed well for online can match in-person teaching, while one moved online in a hurry may not.
An average across thousands of students says little about what will happen to one person in one course. Because prior GPA predicted course grades much better than format did, your own track record is a better guide than the label “online” or “in person.”
A small grade dip in one course matters less than losing momentum and leaving school. Online courses make it easier to fall behind quietly, so catching early warning signs protects a whole degree, not one grade.
Missed deadlines are one of the clearest signals. Also watch for logging in less often, skipping optional discussions, or realizing you can’t remember what the last lecture covered. If you start missing assignments in the first few weeks, contact the instructor then, because catching up is much easier early than after midterms.
Why Strong Students Thrive Online and Struggling Students Fall Behind
Students with higher GPAs did even better online, while struggling students did worse online than in person.6CORE Scholar. A Large Sample Comparison of Grade Based Student Learning Outcomes in Online vs. Face-to-Face Courses A similar pattern appeared when families got home broadband during remote schooling. High-performing children became more engaged and scored higher, but low-performing children became less engaged and scored lower.7Annenberg Institute at Brown University. Heterogeneous Effects of Closing the Digital Divide During COVID-19 on Student Engagement and Achievement
Broadband opens the door to schoolwork and to distractions like games and video. Children who already focus well tend to use it for learning. Children who already struggle may use the same connection to get distracted, and without an adult or teacher steering them, the gap can grow.
Background and access matter too. Students without reliable home internet tend to have lower GPAs and lower scores on tests like the SAT.8Canadian Journal for New Scholars in Education. Understanding the digital divide: Contributing factors and their negative effects on rural students’ academic performance The gap between online and in-person outcomes also tends to be larger for low-income and minority learners.9Educational Psychologist. Equity in online learning During pandemic remote schooling, test scores fell more for lower-performing, lower-income, Black, Hispanic, and Native American students.10PubMed Central. What was a gap is now a chasm: Remote schooling, the digital divide, and educational inequities resulting from the COVID-19 pandemic
Access problems turn into grade problems in ordinary ways. A weak connection can drop you out of a live class, make a timed quiz fail midway, or make video lectures too frustrating to watch. Sharing a device with siblings or working from a phone makes long assignments slower and harder to submit. These are logistical barriers, not measures of ability, and they are often fixable through campus loaner laptops, hotspots, or quiet study spaces.
Students who think and learn differently, especially those with ADHD, report that online courses feel more mentally cluttered and draining because of poor design, not harder content.11Education Sciences. Neurodiversity Positively Predicts Perceived Extraneous Load in Online Learning: A Quantitative Research Study Many online platforms are built for typical learners and overlook problems with attention and sensory overload.12Electronic Journal of e-Learning. Beyond the One-Size-Fits-All: A Systematic Review of Personalized and Gamified e-Learning for Neurodivergent Learners
To judge which group you’re likely in, ask whether you usually finish work without reminders from a teacher, and whether you have a quiet place and a reliable device and connection. If you’ve struggled in a subject before, that subject is riskier to take online. A learning difference like ADHD is a reason to ask about accommodations before enrolling.
If online is your only option, contact the instructor in the first week so you’re known by name. Campus tutoring and disability services often serve online students too. Set fixed weekly study times as if you were attending class in person.
Live, Self-Paced, and Blended Courses Compared
Blended learning means a course mixes online work with regular in-person sessions. Across many studies, blended courses produced modestly better results than traditional classes, while fully online courses performed about the same as in-person ones.13Teachers College Record. The Effectiveness of Online and Blended Learning: A Meta-Analysis of the Empirical Literature In one university comparison, blended students clearly outscored both fully online and traditional students, who scored almost identically.14Journal of Computer Assisted Learning. Effects of traditional, blended and e‐learning on students’ achievement in higher education The blended advantage is larger in science, math, and engineering courses than in other subjects.15Studies in Educational Evaluation. The effect of blended learning on student performance at course-level in higher education: A meta-analysis
There are a few reasons blended courses might work better. Meeting in person at regular intervals creates natural deadlines and accountability that fully online courses lack. The online portions let students review material at their own pace, so class time can go to questions and practice.
Online courses also differ in timing. Live courses meet online at set times, while self-paced courses let you work through material on your own schedule. At California community colleges, the gap in pass rates compared with in-person students was smaller for live online courses than for self-paced ones.16Research in Higher Education. Online Student Performance Under Synchronous and Asynchronous Instruction in California Community Colleges In a small controlled comparison of medical students, though, live and self-paced groups learned equally well, with live sessions feeling slightly less mentally taxing.17PubMed Central. The evaluation of synchronous and asynchronous online learning: student experience, learning outcomes, and cognitive load
A live online course requires being at a set place and time, which suits students who need a schedule but not those with unpredictable work hours. Some live classes are recorded, so check whether attendance is required or whether you could watch later.
To read a course listing, look for words like hybrid, blended, live, scheduled, or self-paced, and check whether there are required meeting times or campus sessions. A self-paced course demands more personal discipline than its flexibility suggests.
Hands-on subjects are a special case. Virtual lab simulations can teach procedures and concepts with realistic scenarios, but they still fall short of physical labs in building real practical skills. If a hands-on skill matters for your career, prefer a format with in-person lab time.
The Study Habits That Predict Online Success
Successful online students manage their own learning: planning, tracking, and adjusting how they study without being prompted. In online and blended courses, time management, effort regulation, organizing material, rehearsal, and thinking about how well you are learning are linked to better performance.18Computers and Education. A meta-analysis of the correlation between self-regulated learning strategies and academic performance in online and blended learning environments Students who regularly evaluated their own work and kept up effort when tired or bored improved their GPA in online courses.19PubMed Central. The impact of self-regulated learning strategies on academic performance for online learning during COVID-19 In one online training program, these habits together explained about a third of the differences in assignment scores.20International Journal of Mobile and Blended Learning. The Effect of Self-Regulated Learning in Online Professional Training
In a classroom, the schedule, the instructor’s pacing, and the people around you keep you on track. Online, none of that happens automatically, so planning and tracking become your job.
Practice volume pays off as well. In an online math program for school children, students who redid more problem sets made fewer errors.21PubMed Central. Academic performance of K-12 students in an online-learning environment for mathematics increased during the shutdown of schools in wake of the COVID-19 pandemic In a flipped class, students’ online study habits showed little effect on short-term results but a clear effect on later learning.22Interactive Learning Environments. Exploring the effects of online learning behaviors on short-term and long-term learning outcomes in flipped classrooms
That gap between short-term and later results explains a common mistake. Many students treat flexibility as permission to wait until the deadline, but cramming online material leaves little time to ask questions and tends to fade from memory before later courses.
You can turn these habits into a weekly routine. Block fixed times in a calendar for each course as if it met in person, and break assignments into steps with your own earlier deadlines. Track missed tasks weekly and adjust before they pile up.
Checking your understanding means testing yourself on what you studied, for example by closing the notes and explaining a concept aloud or answering practice questions. The feeling of familiarity from rereading is not the same as being able to recall or use an idea, and self-testing exposes that gap. Doing it early in the week leaves time to fix what you find you don’t know.
How Instructors and Interaction Shape Results
During emergency online learning, teacher support was linked to higher achievement mainly by boosting students’ confidence and engagement.23PubMed Central. Teacher Support, Academic Self-Efficacy, Student Engagement, and Academic Achievement in Emergency Online Learning Interactive elements like discussion forums and multimedia, along with real instructor contact, improve both engagement and performance.24Discover Education. Impact of online learning on student’s performance and engagement: a systematic review Courses built with professional instructional designers saw nearly 30% more interaction between students, according to a survey of online education leaders.25Higher Ed Dive. Instructional design improves engagement in online courses Well-run discussion boards can also push students into deeper critical thinking about course material.26PubMed. Use of online asynchronous discussion boards to engage students, enhance critical thinking, and foster staff-student/student-student collaboration: A mixed method study Students who feel the instructor knows them and will answer questions are more willing to attempt hard work and ask for help, which leads to more time on task.
A good online course has regular instructor posts, feedback, or office hours, plus discussion activities that require responding to classmates. It has a clear weekly structure rather than a single dump of materials. The syllabus can tell you a lot: look for stated response times to emails, scheduled office hours, and a plan for giving feedback on assignments. Courses that list only deadlines and a reading list often leave students on their own. If the syllabus isn’t available before enrolling, ask the department or a former student how the instructor typically engages.
If a course lacks interaction, create it. Post questions in forums early, since others often share them. Form a small study group by message or video, and use office hours even when they’re optional.
Why Online Exam Scores Can Be Misleading
Online final exam scores without supervision came out significantly higher than in-person finals and matched earlier exam results poorly.27Teaching of Psychology. Unmonitored Online Exams: Valid Assessment or Score Inflation? Scores were also higher on unsupervised online exams than on supervised ones, and they dropped when exams were redesigned to limit cheating.28Issues in Accounting Education. Academic Dishonesty and Online Examinations A high online grade may therefore hide gaps that show up later in a supervised exam or the next course.
With no supervision, students can look up answers, consult classmates, or use outside tools during the test. Scores then reflect access to resources as well as knowledge, so the grade says less about what you actually retained.
The cost comes later. Many courses build on earlier ones, so gaps from a course where you looked up answers can resurface in the next. A supervised licensing or entrance exam, such as for nursing or graduate school, will test knowledge you can’t look up.
For your own studying, that means open-book access can tempt you to skip real learning. Practice under closed-book, timed conditions to know where you stand. Expect many courses to use lockdown browsers, cameras, or redesigned questions.
Screen Fatigue and Its Toll on Performance
Digital learning fatigue affects roughly half to three-quarters of college students and commonly comes with anxiety, stress, and low mood.29Educational Technology Quarterly. Digital learning fatigue and its psychological consequences among tertiary students: a systematic review It lowers motivation, concentration, and engagement and raises the risk of burnout.30Educational Technology Quarterly. Digital learning fatigue and its psychological consequences among tertiary students: a systematic review It is worse with 6 to 8 or more hours of screen time a day.31Educational Technology Quarterly. Digital learning fatigue and its psychological consequences among tertiary students: a systematic review During the pandemic, fatigue combined with money worries and isolation drove disengagement and lower performance.32Higher Education Studies. Student Burnout and Mental Health in Higher Education during COVID-19: Online Learning Fatigue, Institutional Support, and the Role of Artificial Intelligence
It often shows up as tired or dry eyes, headaches, trouble concentrating after an hour or two, and a reluctance to open the course page. Many students mistake it for laziness or lack of interest, when it may be a reaction to prolonged screen use.
A student taking online classes may also use screens for work, socializing, and relaxing, so there is little time away from them. Trading some leisure screen time for offline rest can matter as much as shortening study sessions.
Short off-screen breaks between sessions help, and so does printing or handwriting notes for review to cut screen hours. Keep regular contact with classmates to offset isolation. If low mood lasts more than a couple of weeks, seek campus counseling.
What Online Learning Means for Younger Students
Fully online and blended K-12 public schools generally score poorly on school achievement measures.33Education Policy Analysis Archives. Growth and performance of fully online and blended K-12 public schools Practice software is a different story. Adaptive math software that adjusts to each child produced meaningful gains in six months when used during class.34World Bank. Improving Student Outcomes through Adaptive Learning Platforms: Experimental Evidence from the Dominican Republic In one online math program during school closures, children made fewer errors than the year before, especially weaker students.35PubMed Central. Academic performance of K-12 students in an online-learning environment for mathematics increased during the shutdown of schools in wake of the COVID-19 pandemic
Fully online schools struggle partly because younger children rely heavily on a teacher’s presence to stay on task, and a home setting rarely replicates that. Parents may be working or unable to supervise lessons all day, so children can drift without anyone noticing.
The software’s gains came when it was used in class, where a teacher was present to keep children on task and help when they got stuck. The program adjusted problems to each child, so stronger children were challenged and weaker ones got easier practice.
For parents, that means treating online math practice as a supplement, not a replacement for school, and checking that the program adjusts difficulty to your child. Younger children need adult structure and check-ins far more than college students do. Unfinished work can be a sign of disengagement worth watching for.