Judy Tarver in Grand Prairie, Texas, provides a very good SWA interview prep. She has many years of interview experience for AA. She will prep for any airline and will continue to work with you until you get hired, even if it takes more than one interview.
If you did your 737 type with Higher Power, there is a discount. The prep is conducted at Higher Power's facilities (although telephone prep is also available).
It is simple...If there are thousands who meet the mins...and only a few hundred who meet the class (hired) requirements...the hundred get the call first. Kind of like college recruiting. SWA does not require the degree, but I don't know many without it that have gotten the call.