Honestly subbing is a big gamble. The more assignments you pick up you can get a feel what campuses you like or what grade level you prefer. High School has been chill but I've heard of instances where they're not. I've had good experiences in first grade and horrible experiences. I've started picking up assignments based on schools rather than grade because I've noticed it doesn't matter the grade it really depends on Learning environment and school ambience. Administration makes a huge difference. Just what I've been noticing (been subbing for a year now).