Well, as a graduate of the Clifford School, I will try to provide a latest, neutral, fair feedback for this school.
Recently, international program has combined with Manitoba program, so its' scale became larger. And all the students
who attends international program is using new building, which I never seen any rats running around the hallways.
Faculties are new and clean. Therefore you don't have to worry about shitty circumstances that other mentioned.

Plus, curriculum is evolving. Now they have AP courses.
I also took AP test this year and got fairly good marks. 4 in micro(personally hardest for me), and waiting for other two.
The sad thing is participation rate isn't that high, So some of the subjects will be gone by next year.

Uhh for the teachers, I don't know what to say.
Some of them are really great. They have full of knowledge, experience, and responsibility.
However, some of them are not. Sometime I wonder how they got the occupation.
So it depends on luck I guess. The courses that I choose were taught by comparably better teachers.

And finally, it costs a LOT of money to attend this school.
Every extra event seems to cost some money.
Even worse, we had to make up some events to gather money to open our own graduation ceremony
after paying so much money for the enrollment.
I don't know where hell the all the money goes.

I have to admit that this school is shittier than AISG, but it doesn't mean this school is shitty itself.

Anyway as always, it's individuals who make their own decisions.
So make wise decision. But don't let other to judge what you to do.