What does OSIS stand for?
OSIS stands for "Ontario Schools Intermediate Senior"
How to abbreviate "Ontario Schools Intermediate Senior"?
"Ontario Schools Intermediate Senior" can be abbreviated as OSIS
What is the meaning of OSIS abbreviation?
The meaning of OSIS abbreviation is "Ontario Schools Intermediate Senior"
What does OSIS mean?
OSIS as abbreviation means "Ontario Schools Intermediate Senior"
