My kids are in 5th and 3rd grades so their reality for what school is like is a little different than mine. Kids love field trips. Its an opportunity for them to do something different at school, see something new and learn something without knowing they are learning something. For them the bus ride is a chance to sit next to their friend and pay a game or gossip about who likes who.
Things are a little different for a 42 year old who is back in school. As an apprenticeship program, we are taking a lot of field trips to job sites to learn the tricks of the trade. We have taken several so far, but the first is memorable. I got home that night and when my kids asked how my day at school was, I told them we took a field trip. My daughter responded with a, “who did you sit next to on the bus?”. Its an obvious question to an 8 year old who in her vast years of experience knows that who you sit next to on the bus is incredibly important.
I explained that we didn’t take a bus, which prompted a whole string of questions including the pointed question of “Well how did you get there?”. Like the only way to transport for ‘school’ is on a bus. We had a long discussion about what it means to go on a field trip and what we learned. She did begin to understand that for me, daddy, they ride was not important, but rather the destination. It still didn’t carry weight, but is interesting.
My point is, your kids perception of you going back to school is completely different than what we as adults have learned. They see it still as a social activity with some learning in there, and not by choice. As adults, we tend to see it the other way around, teach us and if I have time we will socialize and even then it is a learning/networking activity.
If you are back in school and have kids, talk to them about what you are doing in school. The homework assignments and reading you need to do. This does help them by showing you are doing the same things they are, and they are important. Learning is a process so getting your kids involved in your learning process will help re-enforce theirs. At least that’s my view on it. 
