Student Organization, Club-An organized group of students with ba-
 sically the same interests whose main objective is the furtherance
 of these interests. Included are social, hobby, instructional, recrea-
 tional, athletic, honor, dramatic, musical, and similar clubs or so-
 cieties which are managed and operated by the student under the
 direction and supervision of adults. All clubs must be approved
 by the proper school authorities.
Subsidiary Activity Ledger-As used in this guide, a record of the fi-
 nancial transactions of a given activity within a fund showing the
 receipts, expenditures, and balance for the activity.
Supply-A material item of an expendable nature that is consumed,
 worn out, or deteriorated in use; or one that loses its identity
 through fabrication or incorporation into a different or more com-
 plex unit or substance.
Supporting Papers-Primary records detailing the items listed on a
 voucher, or similar document, which vouches for the accuracy and
 authority of the voucher. Examples include purchase order form
 duly signed, invoice with a receiving report, and check requisition.
Surety Bond-A written promise to pay damages or to indemnify against
 losses caused by the party or parties named in the document,
 through non-performance or through defalcation; for example, a
 surety bond given by a contractor or by an official handling cash
 or securities.
Teacher-A person employed to instruct pupils or students in a situa-
 tion where the teacher and the pupils or students are in the pres-
 ence of each other. This term is not applied to principals, librarians,
 or other instructional personnel in this guide.
Trade Discount-An allowance usually varying in percentage with vol-
 ume of transactions, made to those engaged in certain businesses
 and allowable irrespective of the time when the account is paid.
 The term should not be confused with "cash discount."
Transfer Voucher-A voucher authorizing posting adjustments and
 transfers of cash or other resources between funds or accounts.
Trial Balance-A list of the balances of the accounts in a ledger kept
 by double entry, with the debit and credit balances shown in sep-
 arate columns. If the totals of the debit and credit columns are
 equal or their net balance agrees with a controlling account, the
 ledger from which the figures are taken is said to be "in balance."
Unit Cost-Expenditures for a function, activity, or service divided by
 the total number of units for which the function, activity, or service
 was provided.
Voided Check-A check which has been declared void. Usually a check
 blank on which is made an error in writing such as an incorrect
 amount, signature, or a discrepancy in the information included.
 The check is usually made void by mutilating the signature space.
 The check blank is retained.
Voucher-A document which authorizes the payment of money and
 usually indicates the accounts to be charged.
Voucher System-A system which calls for the preparation of vouch-
 ers for transactions involving payments and for the recording of
 such vouchers in a special book or original entry known as a
 voucher register in the order in which payment is approved.