I've never 100% known what to do about kids who miss labs. In our school kids are taken out of normal education classes to take music (piano, violin, guitar, etc). For example today I did a lab in 6th grade and I had 2 kids leave for the first half of class and 2 for the second half. So they only get part of the lab, come in late, need things explained, etc. Any ideas about how to handle this? Do I just grade what they have done? What about the kids that miss the lab altogether? They can't stay after to make things up because they ride the buses that leave immediately after school (buses are paid for by parents so the parents would not be okay coming to pick the kid up). Thanks!