It will also vary by school.
Just to stir the pot...
It will also vary by instructor.
...what is the least difficult major in Tier 2?
What the hell is Tier 2?
T1- Engineering
T2- Technical majors that don't fall under T1 (i.e. Math, Biology, Physics, etc)
T3- Non-technical
I think MIDNJAC thought he was asking about T1.
I don't believe Biology is considered technical. When I interviewed in DC, my technical classes listed on the paper the ADM saw were Physics 1/2, Calc 1/2, Chem 1/2, Comp Sci (random elective from freshman yr) and Biochem.