yesterday

yesterday I woke up at 8 o'clock and went to Japanese school, for teach Japanese for 4 peoples.

>> to teach Japanese to 4 people.
 
I came to my house at about 14:20 because my student gave me a ride.
>> I went to my house.

and in the night, I sigh up to Italki, and said with lot of peoples.

>>and at night, I signed up

yesterday

yesterday I woke me up at 8 o'clock and went to Japanese school, for teach teaching Japanese for 4 peoples  persons  Japanese.   

I came to my house at about 14:20 because one  of  my student  students gave me a ride.

and in the at night, I sigh  sighed  this  up to  on  Italki, and said  with told  lot  lots  of peoples people .

yesterday

Yesterday I woke up at 8 o'clock and went to Japanese language school, forto teach Japanese forto 4 peoples.

I came to my housereach home at about 14:20, because my student gave me a ride.

and In the night, I sigh up log in to Italki, and saidchat with lots of peoples.

Remember! There is no plural for "people", therefore there is never an "s" behind :-)

Your vocabulary is not bad, just your sentence doesn't flow! Keep it up!