Wow, you're getting some really great advice from other mom's and their husbands. Way to go mommies!!
I've seen kids hate school for a number of reasons, including the ones given- being bullied or not feeling intellectually stimulated. As a teacher, I personally worked really hard to engage those kids who were ahead of the given curriculum, but let me tell you, that's tough when you have a class of 28 and 1/4 are behind, 1/4 need behavior intervention every 10 minutes, etc. etc.
I've also seen kids dislike school because they feel they don't belong. You would be amazed (or not) by how many kids feel like they don't have any friends-and nobody knew until I did an anonymous survey (if interested I can tell about that). I was able to to vastly change the way kids felt about school and themselves by arranging for volunteer opportunities. After speaking with Kindergarten or 1st grade teachers, I would carefully pair the child with another kid who I felt s/he would get along with and ask them if they would like to help out a kindergarten teacher who really needed some extra help. They would help out during their recess (which is usually torture for a kid who feels they don't belong)anywhere from once per week to everyday. This gave them a feeling that they were needed at school, that someone was counting on them, and gave a foundation for a new friendship. That, along with lots of positive interaction in the classroom made a huge difference, and these kids were hard-core anti-school: they were not doing a lick of work in the classroom. I also made sure they were seated next to someone I thought might grow into a friend for them, which was worth the ensuing talking issues!
Sorry so long. I have such a hard time summarizing!
Hope it helps.
J.