Also I forgot to mention in my school we did core in year 9 and additional in year 10 so now for 4 lessons of the week 5 hours we go over all the content for biology core and additional and we have weekly tests and then we move onto covering all the chemistry content core and additional and then physics core and additional and i have 4 other lessons just for triple content so in total i have 8 science lesson per week 4 for core/additional 4 for triple so 5 hours for core/additional and 5 hours triple content.