Every skill in every HSC course, written out. Rate each one red, yellow or green, and Greenlight works out what to revise and when.
Pick your subjectsHours are not the variable. Everyone in your cohort is putting them in.
What you don't have is a finish line, or any way to tell which hour moved you forward. So you reread the things you already know, because rereading them feels like work, and you find out what you missed with the paper in front of you.
The study app that gives you trajectory.
Mastering a course isn't a blind walk through complex concepts - it's about knowing exactly what you're targeting.
Greenlight is a study app with its library of actionable "skills." A skill is the precise thing you must be able to do to master a concept. Think of it as the building blocks of mastery: finding the modulus of a complex number, comparing mitosis with meiosis, or explaining a shift in market equilibrium. We have mapped 1,595 skills across 16 subjects.
From there, it's simple traffic lights. Rate your skills red if you can't do them yet, yellow if they're shaky or green if you're confident. Greenlight analyses your knowledge and tells you exactly what to study next, solving the ultimate student dilemma and giving your learning a clear trajectory.
Each one is a question about you, not a line lifted out of a document, and comes with a breakdown of what's involved. There are 4,758 worked examples between them.
You'll need to explain market equilibrium as the price and quantity at which the quantity demanded equals the quantity supplied, shown by the intersection of the demand and supply curves, and to draw and label this on a diagram.
Mitosis is one division producing two diploid cells genetically identical to the parent, used for growth, repair and asexual reproduction. Meiosis is two successive divisions producing four haploid gametes that are genetically distinct.
You'll need to plot the complex number z = a + ib as a point on the complex plane, with and without graphing applications, taking the real part along the horizontal axis and the imaginary part along the vertical.
Each subject has a PolyWeb: every skill as a point, with a line between the ones that connect. Every line was written by hand.
Here's Biology.
PolyWeb · Biology
Every node is a skill, coloured by your rating. Every line is a connection somebody wrote down.
Stuck on one concept for an afternoon? The gap is usually a step back, in something it builds on. The web shows you which.
The other half is sitting down and doing it, then being able to see what the hour bought. Greenlight runs the clock, builds your week based on priorities, and tells you what you've been avoiding.
Counts your whole day, not just the session.
What's planned, what you did, and what's coming up.
Where your hours went, against where they were needed.
These cycle through time against need, subject balance, study gradient, sessions kept, plans against reality, quiet subjects, time to green.
Your friend runs Sorbet and Fraunces; you're more Forest and Times New Roman. They study to rain and a 220Hz tone, you'd rather jazz and a fireplace. There's room for both.
The planner builds your week from what's still red, so when you sit down the session is already there. Up next: Homeostasis.
Link a task to the skills it covers, and the ones still sitting red stop being a surprise.
A group ranks by hours this week and by how much is green. You can stay anonymous in it.
Tag each one to the skill it tested. The ones you never resolve are the ones worth revising.
Each of these is useful. None of them knows what you haven't looked at yet.
Greenlight starts at the other end. Every skill in every course you take is already written out and waiting, so nothing depends on you remembering to add it. The only thing it asks you for is a colour.
Everything after that is arithmetic. What is red. What is due back today. Which subject has not been opened in eleven days. How much of a course you have never once looked at. What's the topic even about anyway. These are the numbers no study system you have used has ever been able to tell you.
The question stops being whether you have done enough, and starts being what is left. That one has an answer.
The syllabus has an end. Most people never find out how close they were to it.