I've never met with someanyone who belonged to a debate club at a high school.

We use "met with" to say that you arranged a meeting with someone for a particular purpose. You met with the company president to discuss a possible promotion. You met with someone who belonged to a debate club at high school, in order to interview them for a newspaper article about debate clubs.

In this sense, where it's simply running into someone, encountering someone, it's just "met" not "met with". And "anyone" because it's a negative statement.

Most students would become silent or upset if they awere forced to join thea debatinge.

Or "forced into debating".

There were few chances that I canfor me to discuss controversial topics with my peers.

One of the reasons why the debating isn't common in Japan is that a wide variety of knowledge and the skills to get answers quickly are highly valued in the education system.

Students are supposed to receivepassively absorb knowledges rather than to participate in classes.

It makes sense that you'd try and use "receive" like this, but it takes some thought to understand it! Here's how I might say it.

In addition, there is only one answer to every question, even if there are several ways to solve it.

I can understand that the questions asktesting participants' knowledge isare easy to make and grade.

Match plural, "questions" - "are".

However, there are several ways ofdifferent answers to or opinions to theabout problems in the real world.

Bit of an awkward sentence, I tried to make the smallest changes I could.

A "way" in this sense is something that's associated with a verb or a verbal noun, not just any noun. So you could have "a way of answering", but not "a way of answer". I like the way she laughs. We all remember the way he ran that night. I don't like the way you're looking at me. I'll show you the way to start the engine. All associated with verbs - to answer, to laugh, to run, to look, to start.

Being tolerant of opposite opinionng views and finding the point where both sides can compromise are essential in the communitiesour society.

"opposite opinions" is okay but "opposing views" is a more natural way to say it. Using "the communities" like this feels really unnatural to me. If you'd said "the community" it would be better, but I think "our society" might be a closer match to what you really mean.