geocode address

Need to geocode the student addresses using the regular 5-digit zip
codes. Need to find the accurate point on the map, so in a Latitude and
Longitude environment that should suffice for our specific data needs with
respect to answering the question of what students belong to what
congressional district.
I know ArcGIS for Desktop software will geocode the student addresses and
get points on the map. What is the equivalent tool that I can use to
achieve my first goal?
Then we need to create two other layers one for the representative
districts and the other for the senate districts. Then we have to use the
Spatial Join tool in the toolbox to combine the tables and give us one
attribute table that includes all of our geocode located points and what
congressional district they belong to.

So what should I use to solve the following issue?

Kind Regards

Chitra