Bias and Prejudices

There has been several times when I have both seen and experienced prejudices.  There was an incident in the seventh grade where my science teacher was failing me.  My mom went in to meet with him and he told her, with me right there, that I should get used to failing grades because Blacks aren't as intelligent as Whites and he won't "dumb down" the class to suit my intelligence.  My mom reported him and he admitted to say those things and he lost his job.  This incident made me sad, angry, and confused.  I was sad that someone would feel this way about me.  I was angry because I saw my mother upset.  I was confused because I was receiving failing marks so I wonder if what he said was true.  In order for this incident to change.  The attitude and views of the science teacher would have to change in order to achieve a greater equity.