Visiting on Oct. 16. I read that tours inside the Bodleian are not done when school is in session. Is that true?
Usually, it's easiest (and generally more accurate) to go to straight to the website for information like that. Here is a link and it spells out the closures for each day through November. https://visit.bodleian.ox.ac.uk/plan-your-visit#collapse4928471
No closures listed for 16 October here.