Carta

Carta [kar·tah] n. a course information platform that harnesses big data to help students discover things like how much work a class will require or the likelihood that one will get an A; launched in August 2016 the program aggregates historical course evaluations, workload, grade distribution, etc. to present a course picture; also functions as an active research project run by The GSE's CartaLab, allowing a window unto the student decision-making process from "enrollment to major declaration."

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Ref:

1. Stanford magazine September 2018, "Big Data Helps Students Choose," pg. 22.
2. Bookmark It! Carta. (More than 90% of undergrads have used this tool since its debut.)