A small office that reads examination papers for schools.

How the office began

Arisa Thongchai spent fifteen years in academic affairs in Bangkok secondary schools. The week after end-of-year papers, the meeting always opened with a stack of mark sheets and a hope that someone would summarise them before the bell. In 2014 she registered Mentis Anchor Analytics Co., Ltd. and began drawing those summaries for three neighbouring schools in Lak Si. The first books were thin: mathematics, science, Thai, and English, one bar for each year group, bound with a brass screw.

Niran Phetkasem joined in 2016. He had trained as a technical illustrator and was tired of diagrams that existed to decorate a cover. He set the bands in ink on heavy cream stock and argued, correctly, that a bar which starts at zero flatters a paper nobody failed completely. By 2018 the office was sitting in the room with the committee instead of leaving the book at the gate. In 2021 a foundation with campuses in Lak Si and Don Mueang asked for both mark sheets on one spread. That became the sister-campus reading.

What we will and will not draw

The school’s numbers remain the school’s. Mark sheets come back or are destroyed when the engagement ends, as the privacy note describes. We do not publish a school’s results. We do not rank teachers on a sheet that hangs in a corridor. A director who wants class averages compared may have that page in the director’s copy of the book, and nowhere else.

We are not part of the National Institute of Educational Testing Service, and we do not speak for the Ministry. O-NET scores are read the same way as a school’s own paper: as a list the academic office already holds, turned into bands the committee can point at.