Here is the notice that was sent to all members of the Class of 1959 for Senior Activities.
It's not entirely clear some 40 years later... for example, what is meant by "inexpensive clothes"?
Also, with teenagers today spending hundreds of dollars on their senior prom, it is interesting to see that a ticket to the HHS Senior Prom was only $3.00!

HAMMOND HIGH SCHOOL
HAMMOND, INDIANA

From:   Office of the Principal
To:       Graduating Class of 1959
Subject:   Senior Activities

There should be full attendance on all the class occasions.

Friday, May 15 – Honors Day
Regular auditorium program to replace Class Day.

Friday, June 5 – Junior-Senior Prom
The Junior-Senior Prom is an annual event given by the juniors for their seniors. Only 11a juniors and seniors, chaperones, and those for whom guest tickets have been secured from Mr. Brock, room 109, may attend. Since there is no balcony at Madura’s, it will be impossible to accommodate parents. This evening is the highlight in the school days of our high school juniors and seniors. The Prom will be held at Madura’s Danceland. Tickets are $3.00. It will begin at 9:00 o’clock and will close at 12:00 o’clock. All in attendance must be in the building by 9:30 and no one may leave before 11:00.

Sunday, June 7 – Baccalaureate
The Baccalaureate Service will be held at the Civic Center Sunday afternoon at 2:30 o’clock. All seniors will attend in a body. Caps and gowns will be worn. Boys should wear shirts and ties. Caps and gown may be secured at the bookroom Friday afternoon, June 5. A deposit of five dollars ($5.00) will be necessary, of which two-fifth ($2.50) will be refunded if caps and gowns are returned by Monday noon, June 15, to the bookroom. The bookroom will be open for a half hour Thursday night after Commencement if you wish to return cap and gown then. It will also be open all day Friday.

Tuesday, June 9 – Senior Banquet
The Senior-Faculty Banquet will be held at 6:30 p.m. The place will be announced later. The cost of the dinner is $2.00, and tickets will be sold in advance by members of the senior class beginning May 19. Inexpensive afternoon or sport clothes are suggested.

Thursday, June 11 – Commencement
Commencement exercises will be held at the Civic Center. Caps and gowns will be worn. Boys should wear shirts and ties. Admission is by ticket only. Complimentary tickets will be provided for the parents of the graduates. Additional tickets will be available at the high school bookstore on Thursday, May 21. Tickets are given out to the capacity of the Civic Center. If you do not plan to use your five tickets, please give them to someone who wants them or return them to the bookstore. Announcements which you purchased are not good for admission.

Because of the difficulty in distribution of commencement flowers at the Civic Center, we ask that flowers be delivered to the homes. NO FLOWERS SHOULD BE DELIVERED TO THE CIVIC CENTER FOR EITHER BACCALAUREATE OR COMMENCEMENT.

CAPS AND GOWNS SHOULD BE RETURNED TO THE HIGH SCHOOL BOOKSTORE ANY TIME FRIDAY OR MONDAY BEFORE NOON. FAILURE TO DO THIS WILL MEAN A FORFEIT OF THE REFUND OF $2.50.