diff --git a/crates/aether-scheduler-core/src/lib.rs b/crates/aether-scheduler-core/src/lib.rs
index 9ecbedb7d..2daad19c6 100644
--- a/crates/aether-scheduler-core/src/lib.rs
+++ b/crates/aether-scheduler-core/src/lib.rs
@@ -39,12 +39,9 @@ pub use model::{
 };
 pub use provider::{build_provider_concurrent_limit_map, should_skip_provider_quota};
 pub use ranking::{
-    apply_scheduler_candidate_ranking, candidate_priority_slot, candidates_share_priority_group,
-    compare_candidate_identity_for_ranking, compare_candidate_priority_slot,
-    scheduler_candidate_ranking_order, scheduler_ranking_outcomes, SchedulerRankableCandidate,
-    SchedulerRankingContext, SchedulerRankingMode, SchedulerRankingOutcome,
-    SchedulerTunnelAffinityBucket, RANKING_REASON_CACHED_AFFINITY, RANKING_REASON_CROSS_FORMAT,
-    RANKING_REASON_LOCAL_TUNNEL,
+    apply_scheduler_candidate_ranking, SchedulerRankableCandidate, SchedulerRankingContext,
+    SchedulerRankingMode, SchedulerRankingOutcome, SchedulerTunnelAffinityBucket,
+    RANKING_REASON_CACHED_AFFINITY, RANKING_REASON_CROSS_FORMAT, RANKING_REASON_LOCAL_TUNNEL,
 };
 pub use request_candidate::{
     build_execution_request_candidate_seed, build_local_request_candidate_status_record,
diff --git a/crates/aether-scheduler-core/src/ranking/format.rs b/crates/aether-scheduler-core/src/ranking/format.rs
index 35a33fe28..feb4af2cf 100644
--- a/crates/aether-scheduler-core/src/ranking/format.rs
+++ b/crates/aether-scheduler-core/src/ranking/format.rs
@@ -2,7 +2,7 @@ use std::cmp::Ordering;
 
 use super::types::SchedulerRankableCandidate;
 
-pub fn compare_format_state(
+pub(super) fn compare_format_state(
     left: &SchedulerRankableCandidate,
     right: &SchedulerRankableCandidate,
 ) -> Ordering {
diff --git a/crates/aether-scheduler-core/src/ranking/mod.rs b/crates/aether-scheduler-core/src/ranking/mod.rs
index 483e553b8..52ed0c950 100644
--- a/crates/aether-scheduler-core/src/ranking/mod.rs
+++ b/crates/aether-scheduler-core/src/ranking/mod.rs
@@ -4,13 +4,10 @@ mod priority;
 mod reasons;
 mod types;
 
-pub use format::compare_format_state;
-pub use modes::{apply_load_balance_rotation, compare_rankable_candidates};
-pub use priority::{
-    candidate_priority_slot, candidates_share_priority_group, compare_candidate_priority_slot,
-};
+use modes::{apply_load_balance_rotation, compare_rankable_candidates};
+use priority::candidate_priority_slot;
+use reasons::{demoted_by as ranking_demoted_by, promoted_by as ranking_promoted_by};
 pub use reasons::{
-    demoted_by as ranking_demoted_by, promoted_by as ranking_promoted_by,
     RANKING_REASON_CACHED_AFFINITY, RANKING_REASON_CROSS_FORMAT, RANKING_REASON_LOCAL_TUNNEL,
 };
 pub use types::{
@@ -18,7 +15,7 @@ pub use types::{
     SchedulerRankingOutcome, SchedulerTunnelAffinityBucket,
 };
 
-pub fn compare_candidate_identity_for_ranking(
+fn compare_candidate_identity_for_ranking(
     left: &SchedulerRankableCandidate,
     right: &SchedulerRankableCandidate,
 ) -> std::cmp::Ordering {
@@ -32,7 +29,7 @@ pub fn compare_candidate_identity_for_ranking(
         )
 }
 
-pub fn scheduler_candidate_ranking_order(
+fn scheduler_candidate_ranking_order(
     candidates: &[SchedulerRankableCandidate],
     context: SchedulerRankingContext,
 ) -> Vec<usize> {
@@ -44,7 +41,7 @@ pub fn scheduler_candidate_ranking_order(
     order
 }
 
-pub fn scheduler_ranking_outcomes(
+fn scheduler_ranking_outcomes(
     candidates: &[SchedulerRankableCandidate],
     context: SchedulerRankingContext,
 ) -> Vec<SchedulerRankingOutcome> {
diff --git a/crates/aether-scheduler-core/src/ranking/modes.rs b/crates/aether-scheduler-core/src/ranking/modes.rs
index 5970396a2..55501c463 100644
--- a/crates/aether-scheduler-core/src/ranking/modes.rs
+++ b/crates/aether-scheduler-core/src/ranking/modes.rs
@@ -1,12 +1,11 @@
 use std::cmp::Ordering;
 
+use super::compare_candidate_identity_for_ranking;
+use super::format::compare_format_state;
+use super::priority::{candidates_share_priority_group, compare_candidate_priority_slot};
 use super::types::{SchedulerRankableCandidate, SchedulerRankingContext, SchedulerRankingMode};
-use super::{
-    candidates_share_priority_group, compare_candidate_identity_for_ranking,
-    compare_candidate_priority_slot, compare_format_state,
-};
 
-pub fn compare_rankable_candidates(
+pub(super) fn compare_rankable_candidates(
     left: &SchedulerRankableCandidate,
     right: &SchedulerRankableCandidate,
     context: SchedulerRankingContext,
@@ -79,7 +78,7 @@ fn compare_health(
         .then_with(|| right.health_score.total_cmp(&left.health_score))
 }
 
-pub fn apply_load_balance_rotation(
+pub(super) fn apply_load_balance_rotation(
     sorted_indices: &mut [usize],
     candidates: &[SchedulerRankableCandidate],
     context: SchedulerRankingContext,
diff --git a/crates/aether-scheduler-core/src/ranking/priority.rs b/crates/aether-scheduler-core/src/ranking/priority.rs
index bfc75bcca..b25fd2ff8 100644
--- a/crates/aether-scheduler-core/src/ranking/priority.rs
+++ b/crates/aether-scheduler-core/src/ranking/priority.rs
@@ -4,7 +4,7 @@ use crate::SchedulerPriorityMode;
 
 use super::types::SchedulerRankableCandidate;
 
-pub fn candidate_priority_slot(
+pub(super) fn candidate_priority_slot(
     candidate: &SchedulerRankableCandidate,
     priority_mode: SchedulerPriorityMode,
 ) -> i32 {
@@ -16,7 +16,7 @@ pub fn candidate_priority_slot(
     }
 }
 
-pub fn compare_candidate_priority_slot(
+pub(super) fn compare_candidate_priority_slot(
     left: &SchedulerRankableCandidate,
     right: &SchedulerRankableCandidate,
     priority_mode: SchedulerPriorityMode,
@@ -35,7 +35,7 @@ pub fn compare_candidate_priority_slot(
     }
 }
 
-pub fn candidates_share_priority_group(
+pub(super) fn candidates_share_priority_group(
     left: &SchedulerRankableCandidate,
     right: &SchedulerRankableCandidate,
     priority_mode: SchedulerPriorityMode,