Background: Preteen NSSI and suicidal behaviors (SBs) have increased drastically over the past decade in the USA yet little is known on how to best assess SBs at this age. The goal of this study is to examine the agreement among reports of NSSI and SBs by caregivers and youth, 6-11 years. Investigating agreement concerning NSSI and SBs is important to determine who to address assessments when providing clinical care (e.g., caregiver, child, or both). Method: Forty-nine dyads participated with majority of caregivers being biological mothers (86%). The youth were diverse with 47% identifying as Black, Biracial or Multiracial and 31% as Hispanic. Youths’ average age was 8.9 years (STD=1.7), 59% were female, and 41% were male. For assessing NSSI and SBs, caregivers reported on their child and themselves using the Columbia Suicide Severity Rating Scale (C-SSRS) and youth reported on themselves using C-SSRS. Agreement by section (e.g., ideation) and by question were assessed between the caregiver’s report and youth’s report. Results: Of the 49 dyads, 21(43%) dyads agreed on all items for NSSI and SBs. For youth, lifetime suicidal ideation (SI), 50 discrepancies were present and for youth past month SI, 21 discrepancies were present among all questions. The question with the largest discrepancy was #1 for both lifetime and past month (“Wish dead/Wish go to sleep not wake up). For youth, lifetime suicide attempt (SA) history, six discrepancies were present and for SA history in the past month, two discrepancies were present. For lifetime NSSI, 11 discrepancies were present and five discrepancies for NSSI past month. When considering parental history of SA (n=20 SA+ parents) and youth SI, SA+ parent dyads had 25 discrepancies for lifetime youth SI vs. 19 discrepancies for SA- parent dyads. For youth past month SI, SA- parent dyads had 14 discrepancies present whereas SA+ parent dyads had 6 discrepancies. For youth SA history, SA+ parent dyads had more reported discrepancies than SA- parent dyads for lifetime youth SA (5 vs. 1). And for NSSI, SA- parent dyads had more discrepancies than SA+ parent dyads (6 vs. 3). Discussion: Discrepancies in reporting childhood NSSI and SBs seem to be present at this age and must be considered when assessing these behaviors during clinical care. Asking both the caregiver and youth to gain a better perspective vs. one or the other may be best for this age range. More research on this topic is needed to confirm this to be the case.