Environment
Learning in a group has the advantage of being "lively"; you will have many new friends, friends with the same learning goals, a spirit of learning, and a desire to improve themselves, at least in foreign language skills.
For working students, relationships from classmates can also gradually develop into business relationships.
On the other hand, in one-on-one classes, your self-reliance needs to be higher than usual. Usually, the target students of these classes are people with very clear learning goals; most of them want to achieve results as quickly as possible in the shortest amount of time, they have a strong will to pursue goals and don't mind studying alone.
According to the author's own observations, young students, depending on the individual, may be suitable for one of the two models; however, students who are working people, older students often decide to take one-on-one classes.
Level of uniformity
Group classes often enroll students year-round. The number of students is maintained at 4 - 6, but the composition of students changes frequently.
The reason for this is that each person has a different spirit of learning, a different level of interest in this model, a different feeling about the effectiveness of learning, a different assessment of the level of suitability with the teacher, a different rate of progress after the same period of study, a different changing schedule, etc.
There are many reasons why, after a few classes, you find yourself constantly having new friends. The boring point for students who intend to study steadily is having to repeatedly greet and introduce themselves.
In addition, new students who are not familiar with the class can unintentionally slow down the learning speed of the whole group. Maintaining a stable and uniform list of students is very difficult to guarantee in group classes.
The unwanted consequence is that students with higher levels often find it difficult to maintain patience for a long time when studying with students with lower levels; from another perspective, some students who cannot keep up with their friends easily lose confidence, easily run out of steam,... and then whether they study well or poorly, they also leave the class, reluctantly contributing to the continuous change in the list of students.
With the model of studying privately with a teacher, these limitations are completely overcome. You have a stable class for yourself and have a teacher accompanying you throughout your learning journey.
This is both an advantage and a disadvantage of the one-on-one learning format; you don't have to be pressured to keep up with the pace of other students, however, because you study alone, you will have less direct comparison to know whether you are progressing quickly or slowly.
