Do School Marks Predict Career Success?

“Sixty-five percent. Again.” His mother set the report card on the table without looking up. “Maths sixty-two, history fifty-eight, science sixty…”

His father exhaled and rubbed his forehead. “Same result every term. What is he going to do with this?”

The boy said nothing. He knew where this was going.

“Wait,” his mother said, scanning further down the sheet. She stopped. “Computer science… ninety-one?”

Nobody had circled it before. Somehow, in three years of report cards, nobody had really looked at that line.

Some version of this conversation happens in thousands of homes every report-card season — and it happened, almost exactly like this, to a friend of mine. He scored in the low 60s through his 10th and 12th board exams, the kind of result that gets a quiet, worried conversation at the dinner table. Then he got into an IT engineering program, and something shifted in his career path. Not dramatically — no overnight transformation, no sudden discipline he didn’t have before. He just kept getting the same kind of score, except now it was in the one thing he’d always been quietly good at.In a program full of people who’d chosen the same path, that made him one of the stronger performers in his batch.

Same student. Same study habits, more or less. Wildly different outcome. What changed wasn’t his ability — it was whether what was being measured had anything to do with what he was actually good at.

Here’s what most report cards do: they average everything into one score. Math, history, language, science, art — all flattened into a single percentage that’s supposed to tell you something about the whole child. But treating a child’s interests and abilities the same way you average exam scores can erases the most useful information on the page. A 62% in math, 58% in history, and 91% in computer science doesn’t average out to “a 70% student who’s okay at most things.” It’s a strong signal hidden behind a mediocre-looking average and that average is the only part most parents ever see, because it’s the only number anyone hands them.

This isn't just a comforting story about one lucky student. It's what the research on grades and career success actually finds, and it's more specific than "grades don't matter." A 2024 meta-analysis in the Journal of Applied Psychology — led by a researcher who'd studied this exact question back in 1996 — found precisely this pattern: grades in courses closely tied to a person's future job were a far stronger predictor of work performance than their overall academic record. It's not that grades are meaningless, it's that the average grade is the wrong thing to look at. The grade in a subject that genuinely engages a student carries far more predictive weight than the number sitting next to it on the report card.

There’s a reasonably simple explanation for why. Students tend to put in more real effort,and engage more deeply in subjects they actually care about, leading to a more self-directed practice — and that combination of interest and effort is what shows up later as competence at work. The overall average just dilutes that signal by mixing it in with subjects where none of that was ever present.

If your child is consistently landing in that 60-75% range, the instinct is usually to worry about the number, or to add more tuition, more hours, more pressure across every subject evenly. But the more useful question isn’t “how do we bring the average up” — it’s “where, inside that average, is the number that doesn’t belong there?” Look subject by subject, not just at the final percentage. Is there one area that’s consistently a little higher, even if only by ten or fifteen points? Is there a subject your child brings up unprompted, works on without being asked, or gets genuinely animated about — even if the grade in it isn’t dramatically different from the rest? That’s often where the real signal is hiding.

And sometimes it isn’t on the report card at all. A school only grades what it decides to grade. Coding outside the classroom, taking things apart and rebuilding them, strategy games, storytelling, organizing friends into a plan, editing videos, figuring out how a business idea might work or exploring a particular career or field — none of that shows up as a subject or a percentage anywhere, but it’s often the clearest signal of all. Watch for what your child does without being asked, what they lose track of time doing, what they research on their own with no assignment attached to it. That’s data too — arguably more useful than anything with a grade next to it, because nobody had to push them into it.

This isn’t a call to ignore the other subjects, or to let a 13- to-15-year-old narrow their whole identity down to one interest too early. It’s a call to notice where a child’s strengths and interests may be pointing to a future career. If one subject or activity is quietly outperforming the rest — in engagement, if not always in marks yet — that’s worth paying real attention to, especially when thinking about future career choices, long before board exam results force the question.

It’s tempting to file “follow their interest” under nice-but-impractical advice, somewhere below “focus on scoring well across the board.” The research suggests that’s backwards. A growth mindset and genuine engagement with a subject are stronger predictors of long-term success than an overall GPA ever was.

My friend didn’t become a different student between 10th grade and engineering college. The measurement just finally caught up to what was already true about him. Somewhere in his 65%, there was always a 95% — nobody had circled it yet.

The question worth asking isn’t “is my child good enough.” It’s “what is my child already quietly good at, on the report card or off it, that the average is hiding and that could help shape a future career?”

This is part of BHKB’s ongoing series on the skills and signals schools don’t grade — but that shape how kids actually turn out. If you want a clearer picture of what your child is naturally drawn to, and how those interests may inform future career choices, VIBE’s Interests assessment goes deeper than a single report card ever could.