The art subject has become compulsory in almost every school. Some people think that it is an essential subject, but others opine that it is a waste of time. Even though both of them are correct to some extent, I think it should be an elective subject since not everyone is interested in arts.
Some people think that the art subject is important for children since it can improve them in several ways. Art will make children innovative and improve their concentration because it involves fun and also demands thinking. In other words, it enhances the creativity in children without putting them under stress. For example, playing flute involves fun and also they need to be innovative to compose their own music. Besides, they should memorize some techniques to master the instrument. Hence, the subject is good in making children innovative/creative and focused in an enjoyable way.
Secondly, art would help them to support themselves financially when they grew up. For example, if a child is good at playing a musical instrument, they can earn money in future by showcasing their skills. On the other hand, some people think that learning art is a waste of time. Not all students are good at arts, so it might not support them in future. So, they opine that investing time in a subject which is not going to help in future is a waste of time; instead/rather they should focus on subjects which attract them the most.
To sum up, in my opinion, whether or not a student should learn art depends on their interest. So, the institutions should make the art class as an elective subject; therefore, interested students can sign up according to their choice. 
The  
art
  subject
 has become compulsory in almost every school.  
Some
  people
  think
 that it is an essential  
subject
,  
but
 others opine that it is a waste of  
time
.  
Even though
 both of them are correct to  
some
 extent, I  
think
 it should be an elective  
subject
 since not everyone  
is interested
 in arts. 
Some
  people
  think
 that the  
art
  subject
 is  
important
 for  
children
 since it can  
improve
 them in several ways.  
Art
 will  
make
  children
 innovative and  
improve
 their concentration  
because
 it involves fun and  
also
 demands thinking.  
In other words
, it enhances the creativity in  
children
 without putting them under  
stress
.  
For example
, playing flute involves fun and  
also
 they need to be innovative to compose their  
own
 music.  
Besides
, they should memorize  
some
 techniques to master the instrument.  
Hence
, the  
subject
 is  
good in making
  children
 innovative/creative and focused  
in an enjoyable way
. 
Secondly
,  
art
 would  
help
 them to support themselves  
financially
 when they grew up.  
For example
, if a child is  
good
 at playing a musical instrument, they can earn money in future by showcasing their  
skills
.  
On the other hand
,  
some
  people
  think
 that learning  
art
 is a waste of  
time
. Not all students are  
good
 at  
arts
,  
so
 it might not support them  
in future
.  
So
, they opine that investing  
time
 in a  
subject
 which is not going to  
help
 in future is a waste of  
time
;  
instead
/ 
rather
 they should focus on  
subjects
 which attract them the most.
To sum up, in my opinion,  
whether or not
 a student should learn  
art
 depends on their interest.  
So
, the institutions should  
make
 the  
art
  class
 as an elective  
subject
;  
therefore
, interested students can  
sign
 up according to their choice.