Finland's School information system

As an immigrant, my child's education is the primary driver for my stay and work in Finland. Knowing how to manage it with relocation is very much valuable.

In 7th grade now, he has done his entire study in Finland. Language is not a barrier for him. Wherever he has gone, he has made friends, Finnish kids included.

I am looking to relocate to Helsinki region (neighboring areas like Lahti are fine, too).

My primary concern is: School that is fitting for my son's curriculum history and aptitude.

Following recent school violence, I would also like to be aware if the school has a record in bullying and any red signals for immigrant students.

As of now, all I can do is find a school from municipality area, and look for its publicly available info. That's limiting, because I have to decide the area beforehand. It's also very slow.

To be more precise:

I am not looking for a school rating/ranking system. Subjective feedback is fine, and perhaps more valuable, too. I have stayed in Finland long enough to understand that education across Finland is equitable enough. All I am looking for is curricula along with things that parents like to know, before enrolling a middle school kid.

Example: List of all schools in Jyväskylä where Spanish is taught as A2.

Any forum of parents / teachers will be fine, too! Never mind if they are in suomi, we will be happy to translate.

Thanks in advance!