I attended prep courses and they didn't have an impact on my scores, measured by before and after practice testing (~1500 in the late 90s). What did help is th

I attended prep courses and they didn't have an impact on my scores, measured by before and after practice testing (~1500 in the late 90s). What did help is that I was encouraged to read a lot from a young age, which seems fairly accessible to most families. Support your local libraries.