diff --git a/src/app/domain/projectFilterValues.ts b/src/app/domain/projectFilterValues.ts
index 72ed147a29d..65ba0ee129c 100644
--- a/src/app/domain/projectFilterValues.ts
+++ b/src/app/domain/projectFilterValues.ts
@@ -11,7 +11,15 @@ export class ProjectFilterValues {
   unitTypeValue: string[] = [];
 
   matches(project: LibraryProject): boolean {
-    return this.matchesSearch(project) && (!this.hasFilters() || this.matchesFilter(project));
+    return (
+      this.matchesSearch(project) &&
+      this.matchesPublicUnitType(project) &&
+      this.matchesStandard(project) &&
+      this.matchesDiscipline(project) &&
+      this.matchesUnitType(project) &&
+      this.matchesFeature(project) &&
+      this.matchesGradeLevel(project)
+    );
   }
 
   private matchesSearch(project: LibraryProject): boolean {
@@ -36,16 +44,6 @@ export class ProjectFilterValues {
         })
     );
   }
-  private matchesFilter(project: LibraryProject): boolean {
-    return (
-      this.matchesPublicUnitType(project) ||
-      this.matchesStandard(project) ||
-      this.matchesDiscipline(project) ||
-      this.matchesUnitType(project) ||
-      this.matchesFeature(project) ||
-      this.matchesGradeLevel(project)
-    );
-  }
 
   hasFilters(): boolean {
     return (
@@ -53,8 +51,7 @@ export class ProjectFilterValues {
         this.disciplineValue.length +
         this.unitTypeValue.length +
         this.gradeLevelValue.length +
-        this.featureValue.length +
-        (this.publicUnitTypeValue?.length ?? 0) >
+        this.featureValue.length >
       0
     );
   }
@@ -65,17 +62,19 @@ export class ProjectFilterValues {
     this.unitTypeValue = [];
     this.gradeLevelValue = [];
     this.featureValue = [];
-    this.publicUnitTypeValue = [];
   }
 
   private matchesUnitType(project: LibraryProject): boolean {
     const unitTypeValue =
       project.metadata.unitType === 'Platform' ? 'WISE Platform' : 'Other Platform';
-    return this.unitTypeValue?.includes(unitTypeValue);
+    return this.unitTypeValue.length === 0 || this.unitTypeValue?.includes(unitTypeValue);
   }
 
   private matchesPublicUnitType(project: LibraryProject): boolean {
-    return this.publicUnitTypeValue?.includes(project.metadata.publicUnitType);
+    return (
+      this.publicUnitTypeValue?.length === 0 ||
+      this.publicUnitTypeValue?.includes(project.metadata.publicUnitType)
+    );
   }
 
   private matchesStandard(project: LibraryProject): boolean {
@@ -83,21 +82,24 @@ export class ProjectFilterValues {
     const commonCore = standards?.commonCore ?? [];
     const ngss = standards?.ngss ?? [];
     const learningForJustice = standards?.learningForJustice ?? [];
-    return [...commonCore, ...ngss, ...learningForJustice].some((val) =>
-      this.standardValue.includes(val.id)
+    return (
+      this.standardValue.length === 0 ||
+      [...commonCore, ...ngss, ...learningForJustice].some((val) =>
+        this.standardValue.includes(val.id)
+      )
     );
   }
 
   private matchesFeature(project: LibraryProject): boolean {
     return (
-      this.featureValue.length > 0 &&
-      project.metadata.features?.some((feature) => this.featureValue.includes(feature.id))
+      this.featureValue.length === 0 ||
+      project.metadata.features?.some((feature) => this.featureValue.includes(feature.name))
     );
   }
 
   private matchesDiscipline(project: LibraryProject): boolean {
     return (
-      this.disciplineValue.length > 0 &&
+      this.disciplineValue.length === 0 ||
       project.metadata.disciplines?.some((discipline) =>
         this.disciplineValue.includes(discipline.id)
       )
@@ -106,7 +108,7 @@ export class ProjectFilterValues {
 
   private matchesGradeLevel(project: LibraryProject): boolean {
     return (
-      this.gradeLevelValue.length > 0 &&
+      this.gradeLevelValue.length === 0 ||
       project.metadata.grades?.some((gradeLevel) =>
         this.gradeLevelValue.includes(Number(gradeLevel))
       )
diff --git a/src/app/modules/library/public-library/public-library.component.html b/src/app/modules/library/public-library/public-library.component.html
index c8d4a377d8d..6b794aee694 100644
--- a/src/app/modules/library/public-library/public-library.component.html
+++ b/src/app/modules/library/public-library/public-library.component.html
@@ -2,7 +2,7 @@
   <div class="flex flex-col items-center lg:justify-between lg:flex-row gap-1">
     <public-unit-type-selector
       [filterValues]="filterValues"
-      (publicUnitTypeUpdatedEvent)="filterUpdated()"
+      (publicUnitTypeUpdatedEvent)="filterUpdated($event)"
     />
     <mat-paginator
       class="self-end"
diff --git a/src/app/modules/library/public-library/public-library.component.ts b/src/app/modules/library/public-library/public-library.component.ts
index 7e269ef37fe..7a445e461b9 100644
--- a/src/app/modules/library/public-library/public-library.component.ts
+++ b/src/app/modules/library/public-library/public-library.component.ts
@@ -6,6 +6,7 @@ import { CommonModule } from '@angular/common';
 import { LibraryProjectComponent } from '../library-project/library-project.component';
 import { PublicUnitTypeSelectorComponent } from '../public-unit-type-selector/public-unit-type-selector.component';
 import { LibraryProject } from '../libraryProject';
+import { ProjectFilterValues } from '../../../domain/projectFilterValues';
 
 @Component({
   imports: [
@@ -70,6 +71,14 @@ export class PublicLibraryComponent extends LibraryComponent {
     }, []);
   }
 
+  protected filterUpdated(filterValues: ProjectFilterValues = null): void {
+    if (filterValues) {
+      // this check is required the very first time when filterValues is null
+      filterValues.publicUnitTypeValue = this.filterValues.publicUnitTypeValue;
+    }
+    super.filterUpdated(filterValues);
+  }
+
   protected emitNumberOfProjectsVisible(numProjectsVisible: number = null): void {
     // do nothing. this value is not used in the public library
   }
diff --git a/src/app/modules/library/public-unit-type-selector/public-unit-type-selector.component.ts b/src/app/modules/library/public-unit-type-selector/public-unit-type-selector.component.ts
index 11ba6eb50c0..347de1703c2 100644
--- a/src/app/modules/library/public-unit-type-selector/public-unit-type-selector.component.ts
+++ b/src/app/modules/library/public-unit-type-selector/public-unit-type-selector.component.ts
@@ -28,7 +28,8 @@ import { MatIconModule } from '@angular/material/icon';
 export class PublicUnitTypeSelectorComponent {
   protected communityBuilt: boolean;
   @Input() filterValues: ProjectFilterValues;
-  @Output() publicUnitTypeUpdatedEvent: EventEmitter<void> = new EventEmitter<void>();
+  @Output() publicUnitTypeUpdatedEvent: EventEmitter<ProjectFilterValues> =
+    new EventEmitter<ProjectFilterValues>();
   protected wiseTested: boolean;
 
   constructor(private dialog: MatDialog) {}
@@ -41,7 +42,7 @@ export class PublicUnitTypeSelectorComponent {
     if (this.communityBuilt) {
       this.filterValues.publicUnitTypeValue.push('communityBuilt');
     }
-    this.publicUnitTypeUpdatedEvent.emit();
+    this.publicUnitTypeUpdatedEvent.emit(this.filterValues);
   }
 
   protected showInfo(type: 'community' | 'official'): void {