Yes, gay people in most western countries can enter any profession they want, including teaching.
Yes. Some of the finest teachers in the world are gay.
Some English teachers are gay but most are not. Just like all teachers. Just like all people.
There is no significance or correlation between gay people and teachers.
Yes. There are gay people in all professions.
Gay people are not prevented from being anywhere.
Sexual orientation has nothing to do with teaching ability. Some gay teachers are good, and some aren't.
Yes, gay people are allowed in both North America and South America.
Yes, gay people are allowed to run for president.
All law-abiding people should be allowed in Australia, gay or straight.
This is a sensitive matter of faith and law. Some denominations try to reach out to gay people and do not regard homosexuality as non-Christian. To these denominations, gay teachers are quite acceptable. In some countries, religious institutions are provided some exemptions from laws against discrimination, but may be required to justify discriminating against gay teachers. In either case, Christian schools are entitled to expect teachers to uphold the teachings of the church that employs them.
The real answer is that gay people should be allowed to do anything in public that straight people are allowed. If straight people kiss in public, gay people should also.
There is no reason why gay males and lesbians should not be allowed.