‘Us students’ - being affected by the tuition hikes. Preposition object.
Unless it’s a direct object i.e. ‘WE students’ are doing something, then use ‘Us’.
e.g. The teachers will soon be tired of us children.
or,
We babysitters want to know when parents will start respecting us. vs.
When will parents start respecting us babysitters?
It can be tricky but there is an easy way to decide whether to use we or us in sentences that contain statements such as “we bloggers” or “us girls.”
Simply remove the noun from the sentence and decide which pronoun would be used on its own.
Examples:
We bloggers were introduced first at the conference.
(“We were introduced first at the conference” is correct whereas “Us were introduced at the conference” is incorrect.)
That movie didn’t frighten us girls at all.
(“That movie didn’t frighten us at all” is correct whereas “That movie didn’t frighten we at all.”)