Yale has no established minimum grade point average standard for applicants. However, academic performance is weighted higher than standardized test scores. Grades are treated with a customized assessment because of variance in how different high schools determine GPA scoring. Yale does look for indications that students have taken, and done well in, many challenging classes in high school.
Yale looks at high school transcripts to help determine whether students have the drive and academic ability to succeed at the university level. The Yale admissions page points out that strong standardized test scores are also important, but that they need to be paired with a strong academic performance throughout high school. Data compiled by the academic website Parchment indicated that the GPA of students at the 25th percentile level of Yale students admitted in 2010 to 2011 was 3.89 on a 4.0 scale.