| 2025-10-28 | Kind of sch. for grades one to six |
| 2025-06-08 | Kind of sch. |
| 2023-08-29 | K-5 sch. designation |
| 2021-10-04 | Like the first through fifth grades: Abbr. |
| 2019-10-04 | He, but not she: Abbr. |
| 2017-12-06 | Molybdenum, for one: Abbr. |
| 2016-11-11 | ___ sch. |
| 2016-10-13 | ___ sch. |
| 2016-01-10 | Low-grade?: Abbr. |
| 2015-04-13 | Like a sch. before middle school |
| 2014-11-01 | He is one |
| 2014-09-01 | Kind of school after nursery school: Abbr. |
| 2014-08-31 | Ca, Ce, Co or Cu |
| 2013-09-17 | K-5, schoolwise |
| 2013-07-17 | K-5: Abbr. |
| 2012-11-12 | Radon or radium: Abbr. |
| 2012-09-16 | Kind of sch. |
| 2012-08-15 | Sch. type |
| 2011-08-10 | K-6 sch. designation |
| 2011-02-08 | Kind of sch. |
| 2011-01-06 | Ca, Co or Cu |
| 2010-09-01 | Part of 51-Across: Abbr. |
| 2010-04-16 | I, for one |
| 2010-04-15 | ___ sch. |
| 2010-02-14 | B or C, but not A or D: Abbr. |
| 2009-12-27 | Na, Ne, Ni or No |
| 2009-10-04 | Something on a table: Abbr. |
| 2008-12-21 | K-6 sch. designation |
| 2008-07-01 | Grades 1-6: Abbr. |
| 2008-03-13 | Low-grade?: Abbr. |
| 2007-11-09 | He or I, but not you: Abbr. |
| 2007-05-12 | I, O or U, but not A or E: Abbr. |
| 2007-05-06 | Kind of sch. |
| 2007-02-10 | Basic: Abbr. |
| 2007-01-03 | K-6: Abbr. |
| 2006-11-15 | Kind of sch. |
| 2006-09-05 | Boron or bohrium: Abbr. |
| 2005-12-11 | ___ sch. |
| 2005-10-20 | Kind of sch. |
| 2005-03-07 | School before middle school: Abbr. |
| 2005-01-02 | Kind of sch. |
| 2004-05-29 | Low-grade?: Abbr. |
| 2004-02-20 | K, for one: Abbr. |
| 2003-05-20 | K-6, as a sch. |
| 2003-01-02 | Ca, Ga or Pa |
| 2002-12-08 | Kind of sch. |
| 2002-11-19 | Chem. table component |
| 2002-08-23 | I, for one: Abbr. |
| 2002-04-07 | Kr or K, say |
| 2002-01-02 | K-6: Abbr. |
| 2001-03-11 | I, O or U, but not A or E: Abbr. |
| 1999-12-19 | Gr. 1-6 |
| 1999-06-29 | Kind of sch. |
| 1999-06-03 | Gr. 1-6 |
| 1999-01-20 | Kind of sch. |
| 1998-11-30 | Grades 1-6: Abbr. |
| 1998-08-26 | Item on a table: Abbr. |
| 1998-02-01 | Basic: Abbr. |
| 1997-12-21 | K-6: Abbr. |
| 1997-12-06 | Kind of sch. |
| 1997-10-12 | Sch. type |
| 1997-08-20 | Kind of sch. |
| 1996-07-16 | K-6, schoolwise |
| 1995-12-20 | Kind of sch. |
| 1995-11-19 | Kind of sch. |
| 1995-02-09 | I, O or U: Abbr. |
| 1995-02-05 | First sch. |
| 1994-12-31 | Certain sch. |
| 1994-05-19 | Kind of sch. |
| 1994-04-09 | K-6 |