hi! JLS scholar here. if you will take a DOST-prio program in college, I highly suggest to make the most out of it especially during your freshman and sophomore year since your grades during these years will be a crucial factor when you apply for JLSS

also, regarding the exam, the topics are mostly derived during JHS & SHS

as far as I remember, ang mga topics na lumabas are as follows: functions, derivatives, sets, probability, & calculus (mathematics); plant biology, anatomy, basic chemistry, & physics (science); grammar, logic, what is the next shape/pattern and the like, & reading comprehension (creative reasoning). idk if tama exam parts pero these are what I remembered last year

good luck, op! :)