Revision for National 5 prelims v's Camps

[myotherusernameisbetter]

DS1 has his prelims for his National 5s spread over the first 2 weeks of December.

He has basically 4 weeks available to study and also some time during the 2 weeks that the exams are on.

I have no idea how much study he should be doing tbh but we are trying to fill in his study diary.

He needs to go to a selection camp (Sat/Sun) next weekend for a trip next summer. He also has an opportunity to go to a camp in 3 weeks time (Friday night to Sunday) which he'd like to go to.

What do you think? Should he not go so as to give him more opportunity for study or would the weekend down time be more valuable especially as it's the mocks and not the real thing.

This is my first child doing exams so I really have no clue and I did my exams over 30 years ago.