In rule 2.5 (“Lessons”), replace:

If a Student Brown Noses, they stand a chance of becoming Teacher’s Pet at the end of the lesson.

with

If a Student Brown Noses, they stand a chance of becoming Teacher’s Pet at the end of the lesson. A student can only Brown Nose if his current grade in the Lesson’s Subject is A+.

In rule 2.7 (“Library”) replace:

As a weekly action, a Student who is Alive may Study in the Library by incrementing their Grade in any one main Subject. As a weekly action, a student who is a Zombie may convert to Zombie status any other student who Studied in the Library in the previous 24 hours and is still Alive.

with

As a weekly action, a Student who is Alive and who is Free may Study in the Library by incrementing their Grade in any one main Subject. As a weekly action, a student who is a Zombie and who is Free may convert to Zombie status any other student who Studied in the Library in the previous 24 hours and is still Alive.

In rule 2.9 (“Explosive Language”) replace:

If the result is a 1, 2 or 3 then an accident occurs.

with

If the result is 3 or less then an accident occurs.

In rule 2.10 (“Prefects”) replace:

highest or second-highest combined total Spell Power in all subjects.

with

highest or second-highest combined total Spell Power in all subjects except UNE.

If more than half the EVC contain “That’s useless, dude.”, the rest of the proposal does nothing.
Rename rule 2.17 (“Keep yourself organized down there. Single file I said!”) to “Restrooms”.