I took my dd out of school in grade 12 for a week to go to Disney ... Our first time ever! She was (and still is) an honour student, and her teachers had the same reaction ... 'wish I could go too!'
We also went on a 3 week trip to Vietnam when she was in Grade 11 (with my 2 younger daughters as well, to see their birth country). Not a single teacher assigned any work for her to do, except to enjoy the experience.
She is now in her 4th year at Queen's University (political science) & has a full time job as Commissioner of Academic Affairs.
I don't think going to Disney for a week has negatively impacted her academic life at all!
At the end of October we are going back to Disney
My younger daughters are now in grade 7 & 8, and their teachers are not worried at all about them missing school. I'm very thankful that all of my girls (and my son too!) are hard working and responsible kids. If they weren't, I'd be going to Disney without them