In 5 Toubun no Hanayome, Fuutarou is assigned to help a rich businessman's quintuplet daughters pass their examinations and graduate. Unfortunately, they all suck at academics, or get distracted by other activities and career goals. Fuutarou notices that each one excels at a different subject, so he tries to leverage that fact to everyone's advantage so that each quintuplet can elevate the others in their subject of expertise.
They tend to fail in the first season, regardless, but by S2 E6, they get passing scores, like the image below:
How are passing grades determined in Japanese high schools? In America, marks below 60, or even 70 in some districts, are considered a failing grade, but somehow a 38 in one of the subjects is good enough for an overall passing grade.