I'm just looking ahead here, as DD is only y9 at the moment.
If a pupil is around the 4/5 grade, what needs to be considered when deciding whether to put them into the Foundation or the Higher tier for science and when is that decision usually made?
(I 'get it' for maths because of the more obviously levelled content. I also understand the grading system and the possibility of bombing out of the higher science.)