In ds's school they have had 2-3 of sessions on study techniques in PSE, and they also had one parents information session after school for parents. Both were very ineffective. The class based ones he didn't get much out of, teacher just spoke at them. The evening ones for parents were split into different sessions in different classrooms that we moved around in, were very disjointed and there were some gems of info in there briefly mentioned (which we picked up on as we had done already so recognised) but easily missed by most.
The only good thing from the session was they had some successful students bring in their real study notes/mind maps/revision cards that we could look at, but we only got 2 minutes then got shuffled to the next session. It would have been good as parents to have been able to stop and have a good look and ask the students questions about their revision.
The problem I think with study techniques is every student is different in how they learn effectively, and on top of that every subject is different - some subjects lend themselves to revision cards, others more to mind maps. Until each student tries out different techniques on different subjects they wont know which is working for them and what isn't. This takes time, the parents session we had was one week before the prelims 🤦♀️ Giving out leaflets with disjointed hints and tips just doesn't bring it to life. I got ds a couple of study guides and he couldn't get into them either.
Really students should be starting working out how to study well before they really have too. ds and I worked this out for NAT5 between Easter and Summer last year when his NAT5 course was just starting, we spent a good 3-4 hours on it, watching a few study related youtube videos (mainly Thomas Frank who he liked) and play/paused through them taking notes of things to try.
We bought the stationary he needed for what he wanted to do - lots of notebooks, graph paper, folders, pens, A3 paper, ring binders etc, sorted out where to study, where to store his mountain of 'stuff', looked into and bought revision guides for each subject etc.
Then he started trying some of the different techniques, length of sessions, number of sessions, revision cards/note taking styles/mind maps/recording (for French talking) and worked out for each subject which technique(s) worked best for him. Once he had a good grasp of how to study he was a lot more productive and organised.
It worked for us because it was 1-1 and specific to him and his subjects and we went through a try it, reflect on it, improve it/ditch it cycle a couple of times for each subject. I have no idea how you could deliver something effect to a group of students with individual learning styles without boring them to death (this is what happened in ds's PSE classes).