1. The ideal classroom size is 15-20 students per teacher. Some teachers are able to manage up to 30 students, but beyond that, it can be difficult for teachers to keep track of all the different activities going on in their classroom at any given time. Some schools are overcrowded due to lack of funding or simply because they are so popular that they have more applicants than spaces available.

2. Students focus on the lessons in overcrowded classrooms by: Listening to the teacher, even when they are not being called upon. This can be difficult, especially when students know the answer and want to raise their hand. However, it is important for students to listen as much as possible in order to fully understand what is being taught. Speaking up when they have an idea or comment to make about the subject matter. This can be difficult because it is easy for other students to interrupt with their own ideas. However, it is important for students to speak up so that they can express themselves and share their thoughts with others.

3.The noise level is very high. When students are talking to each other, they can't hear what the teacher says. They are also not paying attention to what the teacher says because they are talking with their friends.

4. In an overcrowded classroom, students may have to sit on the floor or in the aisles.

5.  The answer to the question of whether it's comfortable for students in an overcrowded classroom is no. It's not comfortable for anyone. A crowded classroom is noisy and distracting, especially for students who have difficulty paying attention or focusing on tasks for long periods of time. It's not only distracting to them; it's also distracting for other students who are trying to focus on the lecture or discussion but can't because they're distracted by their peers' noise and movement.

6. Overcrowding makes it difficult for teachers to provide the necessary level of instruction that all students need to learn what they need for success in school, college, and careers. Students who do not get the help they need from their teachers may fall behind or drop out of school entirely. 

7.  The discipline in the class in an overcrowded classroom is very bad. The teacher has to shout at the students all the time because they don't listen to him/her. The teacher does not want to talk about it because he/she is busy teaching, so the students are not interested in learning, they are only interested in playing around. If a student misbehaves then he/she will be sent out of the classroom by the teacher or by other students. Sometimes they can also get into trouble with their parents if they have done something wrong at school. There are many problems with overcrowded classrooms; one of them is that if there are too many people in one room then it is very noisy and you cannot hear what your teacher says so it's hard to learn anything from him/her. Also, when there are lots of people in one room there isn't enough space for everyone so sometimes people have to stand up which makes it even more difficult for them to listen to their teacher because they can't sit down properly!