Stairs, corridors, cloakrooms
Classrooms
Toilets
Laboratories and workshops
Sports and PE
Playground
School fields and grounds
Other
1 Sports and PE
2 Playground
3 Classrooms
4 School fields and grounds
5 Stairs, corridors, cloakrooms
6 Other
7 Toilets
8 Laboratories and workshops
I think this data comes from several years of accidents reported in Britain, but I don't have a more detailed analysis.
The main reason why science accidents are so few is that safety is taken seriously and a lot of resources are used to make it as safe as possible.
Draw your own conclusions.