The First Lesson

I took a my school's lesson for the first time today.

You could also say 'I took my first school lesson today.'

Our current classes are temporary classes until next Tuseday when which clalsses we belong to will be announced.

In order to temporary classes, students' English ability widely vary because some students took part in "the head start program" which was able to take the lessons before entrance.

This sentence is a little bit more complicated. I would say "In the temporary classes, the English ability of the students is varied. This is because some students took place in the head start programme, which allowed them to take lessons before we started today."

If they participated in it from the beginning, they have a 3 month's advantage overthan me.

Anyway, today's teacher is Steve Berghoff, an Americen, and I heard that his maternal grandparents are an Irish and a Ruossian, and paternal grandparents are Germans.

I also heard that from 1900 to 1910 wais the best time for many migrators move to US and so his grandparents migrated to US together with lots of migrators in 1900.

My school's lessons are entirely conducted in English, so I even I have to talk to friends using my poor English during the lesson,. but I thought puttbeing uinder such an environment was great as I expected.

Today, I had my first lesson at school.

Note: this sounds more natural to me.

Our current classes are only temporary (ones) until next Tuesday when the classes we have been assigned to will be announced

In the temporary classes, the English ability of individual students varies widely because some of the students took part in "The Head Start Program", a series of lessons given before the official start of term.

Note: As the "the Head Start Program" is a name it may be better to capitalise it.

If they participated in it from the beginning, they have a 3 month's advantage over me.

Anyway, today's teacher was Steve Berghoff, an American. He told us that his maternal grandparents are Irish and a Russian, and that his paternal ones are Germans.

I also heard/learnt that the years from 1900 to 1910 were the time when the most migrants moved to the US and so it was in 1900 that his grandparents migrated to the US along with many others.

It's interesting.

My school's lessons are entirely conducted in English so even when I talk to friends during class, I have to use my poor English. Still, as I had expected, just being put in such an environment was great/fantastic/wonderful.

One of them is that I can't instantly say what I want to say, and the other is that I get a bit anxious about whether or not the English grammar I'm using is correct.

That's because I need to practise speaking. So are there any volunteers out there who would like to talk to me on Skype on Sunday?

It would be a pleasure if I could talk to/with you. OR: I'd be really happy to talk to/with you.

I took a school lesson for the first time today.

In the temporary classes, students' English abilities widely vary because some students took part in "the head start program" which they were able to take before entrance.

I also heard that from 1900 to 1910 was the best time for many migrators to move to US and so his grandparents migrated to US together with lots of migrators in 1900.

I also heard that from 1900 to 1910 is the best time many migrators move to US and so his grandparents migrated to US together with lots of migrators in 1900.

I think it's better to use the word "emmigrate" here, which means to move to a different country.
Migrate has many uses, one of which is used for animals, e.g. "many birds migrate to warmer climates in the winter"

So I think emmigrate sounds better in this case

My school's lessons are conducted entirely in English, so I even have to talk to friends using my poor English during the lesson, but I thought being (put) in such an environment was great just as I expected.