If I take the SAT and the ACT do I need to mention both even if I don’t necessarily like one of the scores?

It depends on what college you apply to because some schools require, recommend or encourage you to report everything. I think UPenn wants both the ACT and SAT history regardless and some of the schools just want the entire testing history of either the ACT or SAT.

Definitely check with the standardized testing requirements of the school you are applying to decide what you are reporting and how many test scores.

Good Luck

Some examples of what colleges are asking with regards to submitting test scores:

Carnegie Mellon

"All applicants are required to submit all official results of either the SAT or ACT Test. While we're interested in the general pattern of your scores, we give most weight to the highest score you've received on any of the exams."

Georgtown

"All applicants are required to submit all official results of either the SAT or ACT Test. While we're interested in the general pattern of your scores, we give most weight to the highest score you've received on any of the exams."

RICE

"When reviewing SAT and ACT scores, we use the highest score from each section across all administrations. We encourage students to report all scores knowing that we will recombine the sections to get the best possible set of scores for each candidate."

UPenn

"Although we permit Score Choice, we encourage students to submit their entire testing history for both ACT and SAT exams."

You dont have to include your ACT scores, but definitely use your SAT score.