Student or Learner
The school year in Japan starts in April.
Those who are born between January 1 and
April 1 (inclusive) start school one year
before the rest of the people born in the
This is short information for you. Also
may I ask if the above sentences are correct?
You don't need to put "(inclusive)" anymore, since you already specified that they have to born between those dates. Other than that, yes, the sentences are correct.