What do the Taliban (students of Sunni Islam) have against girls attending school?

The headline:

Afghan girls maimed by acid vow to go to school

The link:

http://www.cnn.com/2009/WORLD/asiapcf/01/22/acid.a...

The snip:

Shivering in pain and calling for her mother, Shamsia's hands shake uncontrollably, her eyes swollen shut and her skin peeling from terrible acid burns.

Shamsia and Atifa remain determined to get their education despite the attacks.

Shamsia and Atifa remain determined to get their education despite the attacks.

The 19-year-old was heading to school along with her 16-year-old sister, Atifa, in Kandahar, Afghanistan. It was a warm November morning last year and their only anxiety was being late for class.

"We saw two men up ahead staring at us. One was standing off and the other one was on their motorcycle. I wanted to go but there was a black object in his hand and he took it out," Atifa says.

The girls thought it was a water pistol. "He grabbed my arm and asked, 'Will you be going to school anymore?' He then threw acid on my sister and threw acid on me," Shamsia says.

They weren't the only ones attacked that day. Several other teachers and students were targeted on their way to Meir Weis Mena School in Kandahar, the nation's third-largest city and one where the Taliban have long been influential.

Atifa was burned so badly that her red scarf melted onto her dark brown hair.