I’m going to try to answer your questions as best I can. Feel free to PM me if you have follow-up questions.
UNDERGRADUATE ADMISSIONS
For undergraduate there are different options depending on the school. The information can typically be found on the website. The choices are:
–Some colleges (not too many) let students move in and out of a business major with no restriction. Here he would apply to the college and choose a business major.
–Many colleges have distinct business schools/programs. In those cases:
a) Some colleges have freshmen apply directly to the business program/school. They will either be accepted or rejected from the college’s business school. (ex. Fordham, Wharton).
b) Some colleges take some students as a direct admit to the business school but will accept students looking for business into the liberal arts school. (ex. IU - Kelley) Students can then try to apply for an internal transfer to the business school. The ease of making such an internal transfer will vary dramatically from one college to another and often some prerequisite courses have to be taken in order to apply for an internal transfer. It is important to look at statistics/information posted online.
c) Some colleges admit no students directly to the b-school and have them apply for the program after one or two years at the college. (ex. Berkeley - Haas). Again the percentage of students getting into the program will vary wildly from college to college. Students looking into this typically take a group of courses as prerequisites so they are prepared to enter the b-school and can graduate in 4 years.
TRANSFERRING INTO B-SCHOOL
Undergraduate business programs have their own core curriculum in addition to any general ed requirements of the school. Unless a student takes some of these requirements in the first two years, it might be difficult to start off as a liberal arts major, transfer into a b-school after two years and graduate in four years. My feeling (with my S) was that it would be easier to start off in the b-school and switch out if it turned out to not be his thing (he happened to stay in the b-school). If your son wants to start off in liberal arts and has transferring into the b-school in the back of his mind it is something he should discuss with his academic advisor early on. He should understand the probability of making such a transfer upfront and should try to take some basic core business classes starting as early as freshman year (ex. economics, calculus, statistics).
MBA REQUIREMENTS
He certainly can get into a MBA program with an economics degree. He can also get into a MBA program with an English (or frankly any other) undergraduate degree. There are no prerequisites for MBA programs, even the very top tier schools. They want to get students from varied educational backgrounds and work experiences to come together in a class. My H went to Wharton for a MBA and had classmates who were in business, engineers, a test pilot in the Navy, an opera singer etc. My friend’s D is at Wharton now and one of her classmates is a former NY Giant football player.
Keep in mind that undergraduate education is but one component needed for a top MBA program. To be a competitive candidate one needs excellent undergraduate GPA, top GMAT scores, great essay and letters of recommendation, and a minimum of 2 - 5 years of meaningful work experience demonstrating increasing levels of responsibility.
ECONOMICS V BUSINESS – This is a bit of an unsolicited comment but it may be helpful as your S seems to be debating his path (if not feel free to ignore).
It is important to understand that economics and finance are very different majors. Economics is a liberal arts course of study and gets very theoretical at the upper levels. In contrast if you go to an undergraduate business school you will take a business core with introductory classes in subjects such as accounting, finance, IT, marketing etc. and then you will major in one of those disciplines. I’m not saying that one path is better than the other, but they are different. I would take the time to look at the coursework (can be found online) for both a finance and an economics major and see if one path is preferable.
Good luck!