PROGRESSYLC: YLC Valencia platform

From ProgressMe to the YLC Valencia platform we migrated 43 courses, including 26 marathons and 17 school courses, plus 921 lessons and 9,873 exercises. More than 3,100 images, audio files and covers moved with them. The platform runs on the school's server at ylcvalencia.es/class.

From the first line of code to the full migration took 4 days. The first line of code was written on October 12, and login on the school's server worked the same day. On October 13 the builder, online lessons and homework were in progress. On October 16 the migration from ProgressMe was published to the platform.

All lessons, answers and student progress at YLC Valencia were stored on the server of a Russian platform, and teachers had no copies of their own. From outside Russia the ProgressMe site is behind a captcha, and the rate grows with the number of students. If the server went down, the school would be left without lessons in the middle of the school year.

The builder has 40 block types: texts, images, audio, video, fill-in-the-blanks, tests, matching pairs, essays, voice recording, and embeds of Quizlet, Wordwall and Genially. Exercises with correct answers are checked automatically, and attempts and a timer are enabled in settings. The logic will be familiar from ProgressMe: course, lesson, sections, exercises and a homework tab.

The teacher describes the task in words and gets a ready exercise in one of 23 templates out of 40, plus an image, then edits the result to taste. Claude generates the exercise texts from the template schemas, fal.ai makes the images, and they are saved in the school's storage.

Video, chat, and a timer are right on the lesson page. The teacher leads the class with the "Follow me" button, highlights an exercise with the "Attention" button, and can mute a student's microphone. Next to it is a shared whiteboard where you can place a PDF of up to 20 pages, and a lock stops students from drawing on it.

Two options were compared: an external link to a third-party service and our own media server. We chose our own because ProgressMe reviews complained most about video, and an external link would have put the school back in the same dependency. The LiveKit server provides video, screen sharing and a channel for the board with no per-minute fees.

Homework has a deadline, a submission and the statuses "Submitted", "Needs revision", "Checked". The teacher leaves a comment as text or voice, and in an essay marks errors in color, like a red pen. The student and teacher get emails in their own language, and the class register shows all students across all lessons.

We exported 4 GB of the school's materials and mapped 29 ProgressMe exercise types to the platform's templates. Correct answers, hints in the blanks, "teacher only" notes and numbering are carried over. A sample of lessons was checked against the original number by number, and when the whole export was run, no exercise was rejected and no file was lost.

No. Students moved over with their groups and answers, and teachers with their students; there was no need to write to everyone or reissue access. The platform has 412 students and 6 teachers, 21 marathons became groups under their teacher, the groups include 236 students, and 1,907 answers sit in their lessons.

A copy of the database and files is made every night, history is kept for 14 days, and restoring from a copy has been tested twice. Before every release, 339 automated tests check the platform, so an error in answer checking will not reach a student. Everything is stored on the school's server, and the materials no longer depend on someone else's platform in another country.

Login works with email and a 4-digit code. Teachers are approved by the school administrator, and after a series of wrong attempts login is blocked. The interface is available in Russian, Spanish and English, and each user picks their own language. The platform runs on the school's domain, so the captcha that blocked ProgressMe from Spain is no longer a problem.

Yes, lessons, crosswords and the online class chat shrink to fit a phone screen. Among the case screenshots is a lesson seen through a student's eyes on a phone: exercise 1.3 with blanks. The screenshots were taken from a local copy of the platform on 19.10.2026, and the students are anonymous, labeled "Student 1" and "Student 2".

The platform is built on Next.js 16 and TypeScript with PostgreSQL and Prisma, the same stack as the school's website. Video runs on LiveKit, the whiteboard on Excalidraw with PDF. The ProgressMe import is repeatable: a course is tagged with its source, a second run creates no duplicates, and each course is transferred in a single transaction.