From all accounts, pretty good.
Though DSE does not match the modern infrastructural capabilities of other B-schools in India, it is nevertheless considered to be a decent college for MBA studies. The fees is 15k, which is a steal for an MBA degree. It wears the charm which is evident in every other DU college, displaying brilliance even in its old and rustic exterior.
Placements average Between 8-9 LPA which is better than most other private universities who tend to make a lot of noise over MBA admissions. The CAT cutoff for admission to DSE varies from 90 to 95 percentile. If you're a fresher, DSE is a very good choice. Even Manmohan SIngh used to teach at DSE along with Nobel Laureate Amartya Sen and Senior VP of World Bank Kaushik Basu.