Tasks for the Summer Term

I like the summer term. At my school Year 11 are in lessons until half term, but Year 13 went on study leave on 8th May, which means my teaching timetable has already lightened and will soon reduce further (this year I teach both Year 11 Maths and Year 11 Further Maths so I'll gain a lot of time when Year 11 leave). With all the gained hours in a day you would have thought the summer