There are various signs to look for in order to figure out whether your teacher really cares about your learning or not. Firstly, if a teacher is interested in your life and the way you spend your time, he/she is probably concerned about your overall academic progress and wants to find out ways through which you can improve. Apart from that, those teachers that always look for feedback and take it seriously, are usually concerned about their students.
Moreover, those who actively listen to what the students have to say in the classroom, also tend to care more about the learning of students.