Advantages 

1. Due to caste system people used to marry within their own caste. It led to maintenance of purity of blood. They adopted occupation of their family from their childhood. It helped them to become more specialists in their fields. 

2. People with bad intentions were generally thrown out of their castes, thus people tried to move on detracted path hardly. 

3. Poor and needy members of the community, caste were helped by the capables that led to encourage to sense of social service and sense of sacrifice. No problem was in finding the occupation on themself as it was for them after the birth. 

4. The main fimction of Brahmanas was to give education. Pupils used to be taught by them without any charge. Through the powers of Shuddhi people of other caste could convert to Hinduism. Shakas, Greeks etc became the part of Hindu society.

Disadvantages: 

1. People began to think about their own caste instead of national interests. It was a severe blow to the sense of Nationalism. According to the caste system, Kshatriyas were permitted to take military training and part of the army. 

2. It was too difficult to change hereditary occupation. So, individual development of persons could not move ahead. 

3. Brahmanas, Kshatriyas and Vaishyas used to consider Shudras as inferior to them and used to hate them. Due to such activities the sense of untouchability was encouraged. 

4. Brahmanas as well as Kshatriyas, both used to consider themselves superior than other castes which led to increase in mutual differences. Brahmans started some customs for their interests and benefited.